Given it$=4\%,$ Pt$=120\mathrm{.}0,$ P$$t$+1=122\mathrm{.}4$ and Upper P Subscript t plus $1$ Superscript e $=121\mathrm{.}2,$ calculate the expected real interest rate in period t$$:

The expected real interest rate$=$

$$

enter your response here$\%($enter your response as a percentage to one decimal place$).$